Manufacture of metal rods or the like.



PATENTED JAN. 13, 1903.

P. TOMLINSON. MANUFACTURE OF METAL RODS OR THE LIKE.

AYPLIOATION FILED JULY 22, 1902 4 SHEETS-SHEET 1.

N0 MODEL.

A TTORIVF YS.

W/ TIVES'SES No. 718,546. PATENTED JAN.18,'1903. F. TOMLINSON.

MANUFACTURE. OF METAL RODS OR THE LIKE.

APPLIOATION FILED JULY 22, 1902. N0 MODEL. 4 SHEETS-SHEET 2.

J INVENZ'QR A TTOR/VEYS.

No. 718,546. PATENTED JAN. 13, 190s.

\ F. TOMLINSON. MANUFACTURE OF METAL RODS OR THE LIKE.

APPLICATION FILED JULY 22, 1902. N0 MODEL 4 SHEETS-SHEET 3.

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ATTORNEYS.

No. 718,546- PATENTED JAN. 13, 1903.

F. TOMLINSON.

MANUFACTURE OF METAL RODS OR THE LIKE. ATPLIOATION FILED JULY 22, 1902. 7 no MODEL. 4 SHEETS-SHEET 4.

NiTED STATES ATENT OFFICE.

FREDERICK TOMLINSON, OF SALFORD, ENGLAND, A S SIGNOR OF ONE-HALF TO THE BROUGHTON COPPER COMPANY, LIMITED, OF SALFORD, ENG- LAND.

MANUFACTURE OF lVlETAL RODS ORTHE LIKE.

SPECIFICATION forming part of Letters Patent No. 718,546, dated January 13, 1903.

Application filed Ju y 22, 1902. Serial No. 116,532. No model.)

To all whont it may concern:

Beit known that I, FREDERICK TOMLINSON, engineer and metallurgist, a subject of the King of Great Britain, residing at Broughton Copper Works, Salford, in the county of Lancaster, England, have invented a certain new and useful Improved'Manufacture of Metal Bars, Rods, Forgings, Stay-Bolts, or the Like, of which the following is a specification.

My invention relates to an improved manufacture of metal bars, rods, forgings, staybolts, and the like; and the object of my invent-ion is to produce a stay-bolt or like article having increased flexibility without any loss of tensile strength. I accomplish this object by producing a rod or bar having longitudinal segmental strands alternating with spaces of solid metal.

In carrying my invention into effect I take an ingot of metal in which are cast, drilled, or otherwise formed any suitable number of holes or spaces so arranged that after the ingot has been reduced to bars or rods by rolling or equivalent treatment the holes or spaces 2 5 become elongated and partially or completely closed, thus making the metal bars each to consist of alternate solid and stranded portions, the latter being composed of a number of contiguous or closely-adjoining segments.

The bars or rods thus formed may be cut across at any point or points desired, either through the solid metalor through the strands, and in some cases it may be advantageous to twist, bend, spread, or forge the bars or rods into any required shape or form.

In the accompanying four sheets of drawings, Figure 1 is an elevation of a metal ingot orbillet in which any suitable number of holes are formed. Fig. 2 is a transverse section taken through the plane of one of the series of holes, Fig. 1. Figs. 3 and 4c are similar views of the ingot or billet shown in Figs. 1 and 2 after the same has been reduced in diameter. Fig. 5 is a View of a finished staybolt. Figs. 6, 7, S, and 9 and Figs. 10, ll, 12, and 13 are corresponding views to Figs. 1, 2, 3, and 4, respectively, of two alternative constructions. Figs. 14, 15, 16, and 17 are also corresponding views, but illustrating the manufacture of a tubular stay from a hollow in Fig.2.

billet. Fig. 18 is an elevation of a metal ingot formed with any desired number of series of elongated holes or slots instead of round holes; and Fig. 19 is a transverse section of the same, taken through the series of elongated holes or slots. Fig. 20 is an elevation of a rail-bond with thickened ends formed by rolling the ingot, Fig. 18; and Fig. 21 is a transverse section of the middle portion of Fig. 20. Fig. 22 is a similar view to Fig. 20, but showing a rail-bond with straight instead of twisted strands and with the curved thickened ends. Figs. 23, 24, and 25 are plan, edge view, and transverse section, respectively, of a flatrailbond made from a metal ingot such as Fig. 18. Figs. 26, 26, and 26' taken together constitute a View, partly sectional, of a tubular rail-bond made from a hollow ingot such as Fig. 14. Fig. 27 is a View of a rod rolled from a billet similar to that shown in Figs. 18 and 19. In this case the rolled rod has been cut through the stranded portions which have then. been spread out.

Referring first to Figs. 1 to 5, Itake an ingot a, of metal, in which are cast, drilled, or otherwise formed any suitable number of holes or spaces ct, arranged in groups or series at suitable distance apart. In this case each group consists of two diametricallyformed holes in the same plane and bisecting one another at right angles, as shown clearly The ingot a is then rolled or other- Wise reduced to the required diameter, as shown in Figs. 3 and 4, whereby the holes a, are closed and the ingot is converted into a rod or bar, which is then cut into suitable lengths, and each length is then screwed at the ends, if required, and turned down to the desired diameter between the screwed ends and otherwise finished in the usual way, so as to form a.staybolt or bond such as that shown in Fig. 5; In this way I obtain a staybolt or bond having its solid screwed or other ends connected by a number of intermediate strands formed by elongating and closing 5 each series of holes a, all the said strands lying closely together,and thus aifording flexibility and yet retaining the full tensile strength of an ordinary solid stay-bolt or bond of equal diameter.

Referring now to Figs. 6to 9, the only difference between these views and Figs. 1 to 4.- is that in this case three intersecting holes a are drilled or otherwise formed in the metal ingot a in place of the two bisecting holes a in each series or group of holes, as above de' scribed. In like manner Figs. 10 to 13 illustrate the manufacture of a rod or bar from a metal ingot a with four intersecting holes a in each group or series of holes.

Referring next to Figs. 14 to 17, these views illustrate the manufacture of a tubular stay from a hollow metal billet at, in which six holes a are formed in each series or group, but any other suitable number of holes might be employed.

Referring to Figs. 18 to 21, the metal ingot a is in this case shown formed with elongated holes or slots instead of round holes a, and when reduced and elongated to a bar of the diameter shown in Fig. 21 or other desired diameter the bar may be formed into a railbond, as shown in Fig. or Fig. 22, by thickening the ends a and forming holes a therein. The rail bond Fig. 20 is shown with straight ends and with the strands a twisted spirally, whereas the bond Fig. 22 is shown with curved ends a and with the strands ct, left straight; but it will be readily understood that the strands a might be leftstraight in Fig. 20 or might be twisted in Fig. 22. The elongated holes or slots shown instead of round holes a are equally'applicable to all the previous constructions described with reference to Figs. 1 to 17.

In Figs. 23 to 25 the rail-bond a is shown fiat instead of round, and this is formed by rolling out or otherwise flattening the metal ingot a, Figs. 18 and 19, and forming thickened ends a at right angles to the bond. The strands a are shown spirally twisted, but they might be left straight. Fig. 26 shows a similar rail-bond, but in this case it is made tubular from a hollow metal billet, the strands a shown spiral might be straight, and the jumped ends a have the holes a expanded therein.

Fig. 27 shows a rod rolled from a billet similar to that shown in Figs. 18 and 19. In this case the rolled rod has been cut through the stranded portions, which have been spread out and forged, so as to form the head portion a of a lightning-conductor or for any other purpose to which it is applicable.

It will be readily understood that the original ingot, billet, casting, or block of metal may be rectangular, hexagonal, octagonal, or of any other suitable shape, either solid or hollow, and that any convenient number of intersecting or other holes or spaces may be formed in the block and at any desired distance apart, so as to form when reduced (by rolling, drawing, forging, or otherwise working) to their required diameter or size alternating portions of solid or hollow metal and connecting strands. Again, the holes or spaces need not necessarily completely penetrate the ingot, billet, casting, or block, but may be made of any suitable depth, size, and shape and in any position desired.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is The herein-described method of making metal rods and the like which consists in forming holes in a metal ingot, and then reducing the ingot in diameter until the holes become elongated and closed and thus divide the intermediate portion of the rod thus formed into strands connecting undivided portions of the metal, substantially as described.

In witness whereof I have hereunto set my hand in presence of two witnesses.

FREDERICK TOMLINSON.

Witnesses:

S. W. GILLETT, HERBERT ROWLAND ABBEY. 

